2013 Celeb Baby Boom

"Bill and I are blessed beyond words to welcome Edward into our lives," Giuliana tells E! News exclusively. "Thank you so much to everyone who supported us along the way. We are so in love with the little guy already!"

The couple exclusively tells E! News that labor was just over four hours and went smoothly and relatively quickly. Both Bill and Giuliana were in the delivery room for the entire birth of their baby. They couldn't hold back tears of joy the moment their son was born. The Rancics told us they were beyond elated and couldn't believe their journey to become parents is finally complete.

Bill cut the umbilical cord minutes after the baby was born, and Giuliana was the first to hold her son for a long while, then gave him to Bill to embrace. The new parents both fed their baby, who they say had a big appetite, and share with us that he is doing incredibly well and has had his first bath.

Bill announced his son's birth on Twitter saying, "The 'Duke' has landed! Edward Duke Rancic was welcomed into the world last night at 7lbs 4oz. G &I feel blessed beyond words...We did it!"

And Denver is special to the couple, who mainly split their time between L.A. and Chicago, for another important reason, as well.

It was a doctor in Denver who they were seeing about fertility treatments that insisted Giuliana have a mammogram. Having been diagnosed early enough, Giuliana is now a breast cancer survivor who has become a prominent spokeswoman about the importance of early detection.

"One of the things we've always tried to do is help others with our story," Bill said on Today in April when they announced they were expecting. "Whether it's with the infertility issues, whether it's with the breast cancer, we said we're gonna turn these negatives into positives. And if we can help others by sharing our story, then it's worth it."

Giuliana told us at the time, "We are so thrilled that our prayers have been answered. We are absolutely ecstatic to be sharing this with everyone who has been following our journey."